A man was stabbed 24 times in less than a minute after jumping off a bus, the Old Bailey has been told.

Daniel Graham, 18, had been "descended upon by a group of murderers, some of them armed with knives and glass", said Duncan Penny, prosecuting.

Mr Graham was helped back on to the 176 bus in January last year by other passengers but died from his injuries.

Two 16-year-olds and Lennie John, 24, from south London, deny murder. A 17-year-old denies assisting an offender.

Trouble had flared at an under-18s event at Dulwich Hamlet Football Club in south-east London earlier in the evening, the court heard.

Mr Penny said a row broke out between Mr Graham's friends and another group of youths.

He added: "Daniel's group was punched and knives were produced and it appears a firearm was discharged and at least one shot was fired. Daniel's group fled the party and their escape route took them past East Dulwich railway station. They were pursued by members of the defendants' group."

Mr Graham had tried to take refuge on the double-decker bus before changing his mind and jumping off. But he was attacked in front of passengers by a large group of youths who subjected him to "a volley of punches, kicks and stamps" to the body and head.

Mr Penny said CCTV on the bus showed the time of the attack as 12.09am.